Year	Number of Firms
1992-01-01	37
1997-01-01	68
2002-01-01	111
2003-01-01	136
2004-01-01	119
2005-01-01	129
2006-01-01	112
2007-01-01	136
2008-01-01	169
2009-01-01	190
2010-01-01	231
2011-01-01	306
2012-01-01	334
2013-01-01	305
2014-01-01	276
2015-01-01	272
2016-01-01	310